Built for style and performance, the CEP Men's Compression Socks Low 4.0 deliver maximum comfort to improve your endurance and keep your feet feeling great during and after your workout. Targeted compression in the arch increases blood circulation and provides premium support to prevent injury, reduce swelling, and alleviate pain associated with Plantar Fasciitis and the Achilles tendon. Graduated 18-20mmHg of compression through the lower legs is scientifically proven to help maximize power, reduce fatigue, and speed recovery time. Great to wear before, during the run, and afterward for recovery.